1 --[[--

2 return_value = -- return value of executed chunk

3 execute.chunk{

4 file_path = file_path, -- path to a lua source or byte-code file

5 app = app, -- app name to use or the current will be used

6 module = module, -- module where chunk is located

7 chunk = chunk -- name of chunk (filename without .lua extension)

8 id = id, -- id to be returned by param.get_id(...) during execution

9 params = params -- parameters to be returned by param.get(...) during execution

10 }

11

12 This function loads and executes a lua file specified by a given path or constructs a path to load from the module and chunk name. A chunk name should always begin with an underscore. All return values of the loaded and executed chunk are returned by this function as well.

13

14 --]]--

15

16 local function pack_return_values(...)

17 local storage = {...}

18 storage.n = select("#", ...)

19 end

20

21 local function unpack_return_values(storage)

22 return table.unpack(storage, 1, storage.n)

23 end

24

25 function execute.chunk(args)

26 local file_path = args.file_path

27 local app = args.app

28 local module = args.module

29 local chunk = args.chunk

30 local id = args.id

31 local params = args.params

32

33 app = app or request.get_app_name()

34

35 file_path = file_path or encode.file_path(

36 request.get_app_basepath(),

37 'app', app, module, chunk .. '.lua'

38 )

39

40 local func, load_errmsg = loadfile(file_path)

41 if not func then

42 error('Could not load file "' .. file_path .. '": ' .. load_errmsg)

43 end

44

45 if id or params then

46 param.exchange(id, params)

47 end

48

49 local result = pack_return_values(func())

50

51 if id or params then

52 param.restore()

53 end

54

55 return unpack_return_values(result)

56 end